The optimized adaptive response possesses high sensitivity (large \(|A|\)  and \(|B|\) ; Table REF ) consistent with experimental results from E. coli [1]}. Furthermore, \(\beta \) , the rate at which the bacterium stops tumbling, is high, which is in line with the short tumbles observed in real bacteria [2]}. In contrast to real bacteria, the optimized bacteria have a lower \(\alpha _0\) , and thus tumble less than real bacteria when attractant concentration is increasing (Figure REF c, red curve, \(t = 50\) ). This may be an artifact of modeling chemotaxis in a one-dimensional environment: in a three-dimensional environment, tumbling may assist the bacterium in finding even steeper paths to attractant optima.
